I watched Inter yesterday and I can safely say that it's too early for them to pose any danger to Juve and Napoli.
Conte will do an excellent job with what he has in defense. Eventually, a 3-men backline of Godin-Skriniar-de Vrij should become formidable. The midfield and attack are fine and with time they'd do even better. Next season, Marotta might do a good job or get lucky and make them a real title contenders with 2-3 excellent players for the midfield/attack.
But this year they don't stand a chance. They didn't get lucky as we did in our first scudetto season with Pirlo and Vidal. Sensi and Barella are good, but far from that level. And, of course, they have much more serious contenders for the scudetto than we had in an injury-plagued and thin-bench Milan.